That’s medieval fanfic built over badly translated old testament passages that are talking about local kings and it’s literally in the previous and next passages that they weren’t talking about any angel… the only thing about being cast out is in Revelations after a war in heaven, that is said the dragon is the same as the serpent, the serpent that told humans that god lied that the fruit would kill them but instead would give us knowledge of good and evil, so literally pushed us towards developing philosophy and sciences, and that war is narrated just after god wipes a third of humanity in one go, turns the oceans into blood, send plagues, famine, beetles that sting like scorpions, and tortured the rest of humanity that for months would look for death and not find it and good were the mothers who smashed their babies against the rocks etc etc etc, that’s what the dragon rose up against
nope, still into heavily political hardcore punk